So, I'm actually pretty excited it's now possible to get Run Disney NB's from previous years at Fit2Run, depending on availability. To my knowledge, this is the first time Run Disney has sold these sneakers outside the expo. And it certainly beats (most) eBay prices.
Here's what the Disney Springs Fit2Run store currently offers as of 5/21/16:
2015 Donald Duck for Men
Info link:
2015
https://www.newbalance.com/article?id=3411
2015 Tinkerbell for Kids
*no adult sizes available*
Info link:
http://www.newbalance.com/article?id=1906
2015 Retro Mickey Mouse for Men &
2015 Retro Minnie Mouse for Women
(Also known as the Steamboat Willie versions)
Info link:
https://disneyparks.disney.go.com/blog/2015/01/go-retro-with-the-2015-new-balance-rundisney-shoes/
Since these are all "left over" 2015 versions, limited sizes are available.